地质灾害遥感调查与监测中高分二号卫星数据应用研究——以湖南新化示范区为例

高分二号成功发射,标志着我国已可进行1 m空间分辨率的遥感监测。为了使高分二号数据能更快地在地质灾害调查领域得到推广,本文针对地质灾害调查与监测中高分二号遥感数据的处理方法进行研究。试验表明,通过对示范区高分二号影像的处理,可获得满足1∶10 000比例尺的平面精度要求的正射影像图,且结果非常适合地质灾害遥感调查与监测。经过多次试验,采用Band1、Band4×0.25+Band2×0.75、Band3组合方法效果较佳,基于ENVI软件的Gram-Schmidt Spectral Sharpening算法进行融合效果较好。

Method Research for Geological Disaster Survey and Monitoring Based on GF-2 SatelliteData Processing: Taking Hunan Xinhua Demonstration Zone as an Example

The successful launch of GF -2 satellite signs that the remote sensing monitoring of 1 m resolution can be achieved in our country .In order to popularize the GF -2 satellite data in geological disaster survey and monitoring area more quickly , the methods of geological disaster survey and monitoring are researched in this paper. The experiments show that the DOM by GF-2 data of demon-stration area can meet the plane precision of 1:10000 scale and the DOM can be appropriate for geological disaster survey and monito-ring.Based on several experiments , the results indicate that combination method by Band 1, Ban4d ×0.25+Band2 ×0.75 and Band3 can produce the best results , and fusion by Gram-Schmidt Spectral Sharpening has a good effect .